The following DataNodes have no identifier: 28
More details at https://www.wikipathways.org/WikiPathwaysCurator/DataNodesTests/dataNodesWithoutIdentifier
The following genes with an identifier have been found but that do not have a mapping to Ensembl: 2
http://classic.wikipathways.org/instance/WP1352_r140552 LOC793576 with datasource Entrez Gene
http://classic.wikipathways.org/instance/WP1352_r140552 wu:fa04h02 with datasource Entrez Gene
More details at https://www.wikipathways.org/WikiPathwaysCurator/GeneTests/genesWithoutEnsemblMapping